body{
    background: #f3f3f3;
}
.outer-box{
    width: 854px;
    background: #fff;
    margin: 0 auto;
    overflow: hidden;
}
.page-title{
    padding-top: 50px;
    text-align: center;
}
.sign-box{
    width: 300px;
    margin: 0 auto;
    padding-top: 20px;
}
.captcha-addon{
    padding: 0;
    overflow: hidden;
}
.captcha-img{
    width: 94px;
    height: 32px;
    cursor: pointer;
}